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Finding the Fourth Proportional to 439,866.18, 607,013.19 and 238,662.18

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Solution

The fourth proportional to 439,866.18, 607,013.19 and 238,662.18 is: 329,352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,866.18 : 607,013.19 = 238,662.18 : x
  2. Step 2: Convert to fraction form
    439,866.18/607,013.19 = 238,662.18/x
  3. Step 3: Cross multiply
    439,866.18x = 607,013.19 × 238,662.18
  4. Step 4: Simplify right side
    439,866.18x = 144,871,091,214.15
  5. Step 5: Solve for x
    x = 144,871,091,214.15/439,866.18
  6. Step 6: Final answer
    x = 329,352.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.